the crowd at the conservative conference in colorado welcomed mitt romney with thunderous applause on saturday. it was a victory lap. >> trickle down government that the president proposes is one where he will raise taxes on small business, which will kill jobs. i instead want to keep taxes down on small businesses to create jobs. >> an instant cbs news poll of the uncommittedded voters showed that he won the first debate by a margin of 2-1. speaking on thursday, he continues to draw contrast with the president. >> we don't measure compassion on how many people to put on food stamp and how many you can get a good job to get off the food stamps. >> reporter: president obama came out swinging on thursday, something that critics say he should have done at the debate. >> the president told the crowd of supporters in denver that a different challenger showed up on wednesday night. >> the real mitt romney has been running around the country for the last year. seeing $5,000 in tax cuts. and they said that he didn't know anything about that. >> and the president slammed romney for saying that